> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CrossmintCheckoutTransactionSuccess

> Flutter Final Class

**Final Class**

Returned when the payer successfully signed and broadcast a transaction.

```dart theme={null}
final class CrossmintCheckoutTransactionSuccess extends CrossmintCheckoutTransactionResult
```

## Constructors

### CrossmintCheckoutTransactionSuccess

```dart theme={null}
const CrossmintCheckoutTransactionSuccess({required this.txId})
```

Creates a success result.

## Properties

### txId

```dart theme={null}
final String txId
```

Transaction id (e.g. EVM tx hash `0x...`, Solana signature base58).